Improvement in seal-locks



UNITED STATES PATENT Ormea.

VILSON BOI-IANNAN, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN SEAL-LOCKS.

Specification forming part of Letters Patent No. 112,011, dated February21, 1871.

I, WILSON BOHANNAN, of Brooklyn, in the State of New York, have inventeda new and useful Improvement in Padlocks, of which the following is aspecification Nature and Objects 0f the Intention.

My invention relates to apivoted seal-holder, which is tirmly secured inposition over the keyhole without the aid of a spring, by means of anarm within the lock-case, which is engaged and held by the nose oftheshackle when locked.

Description of the Accompanying Dwnmng.

Figure l is a front View of the lock with the upper face-plate removed.The parts are here shown in unlocked condition. Fig. 2 is a front viewof the face-plate with the sealholder and its protecting cover attachedthereto, the said attachments being shown in their retracted position.Fig. 3 is an internal View of the face-plate, showing the lockingarm ofthe seal-holder in the position which it assumes when the saidseal-holder is closed over the key-hole. Fig. 4 is a section of thefaceplate and its attachments at :v m, Fig. 3. Fig. 5 is an edge view ofthe lock, looking from below.

General Description.

The casing A, cap or face plate A', and shackle G may be made incustomary manner.

B is a bolt pressed forward by a spring, b, but held in its retractedposition when the shackle is out by means of a dog, I), which is pivotedon the stud F and pressed upward by the spring G, so as to cause it tothrow up the shackle and engage with the fence b of the bolt when thesaid bolt is retracted by the key.

H H II represent the tumblers7 which engage with the fence b', and neednot differ materially in construction and operation from those in commonuse for a like purpose. The tumblersprings are shown at h.

I represents my seal-holder, which is pierced with a key-hole, t',corresponding in shape and size with that shown at .I in the face-plateof the lock.

S may represent a seal, of variegated glass 0r other suitable material,applied in a recess or cavity in the seal-holder I. The said recess ismade with an open side, as clearly shown in Fig. 2, to admit of theready removal and insertion of the seals when the sealholder is turnedback from its position over the key-hole J.

When in position the open edge of the sealholder is covered by astationary iiange, K, on the face-plate A', so that the seal will beenveloped on all sides and its escape prevented.

The seal-holder is secured to a pintle, L, which turns in theface-plate, and carries on the inside of the casing a rigid arm, M, uponthe edge of which the shackle slips down when it is locked, therebysecuring the seal-holder im movably in position.

N is a protecting-cover, to be closed over the seal-holder when inposition. This may be pivoted at any point, and held by a springcatch,O, located at or near either end, as preferred.

A hole, n, is provided through which to i11- sert a pointed instrumentto release the cover when desired.

P in Fig. 2 represents a lug which engages with a lip or ange, 1J, Fig.5, (shown in dott-ed lines in Fig. 2,) to hold the cover down in closecontact with the seal-holder.

Operation.

The casing A and face-plate A being prop erly secured together, and theparts being in other respects in the positions shown in Figs. l and 2,if it be desired to close the lock, a seal of suitable character isinserted in the sealholder, and the latter closed over the key-hole. Theshackle then may be shut down, and, coming first in contact with thelatter, is at the same instant driven into the recess formed for it inthe shackle, and the tumblers H fall into position behind the fence b incustomary manner. The shackle being thus held by the bolt and the latterby the tuniblers, while the shackle in its turn secures the sealholderI, and this, in conjunction with the projecting flange K, secures theseal over the key-hole, it becomes impossible to open the lock withoutbreaking the seal. The seal being broken and the key inserted, itretracts the tuinblers in customary manner, and the dog D, rising infront of the fence b', secures the holt and throws up the shackle. Thekey is then removed, and the seal-holder, having` been released by Jcheshackle, can be turned back for the removal of the broken seal and theinsertion of the new one.

Claim. I

I claim as my invention-- The pivoted seal-holder I, carrying an arm,

WILSON BOHAN N AN. Witnesses:

OcTAvIUs KNIGHT, H. G. ELLIOTT.

